Application guide of BaroPAM solution, a multi-layer authentication solution for user identification and authentication in OpenVPN environment Index 1. What is OpenVPN? 2. OpenVPN installation and setup 2.1 Install OpenVPN 2.2 Linux client configuration 3. BaroPAM installation and setup 3.1 Preparation before installing BaroPAM3.2 Download BaroPAM installation module 3.3 Create BaroPAM configura..